I'm also a convert from Nikon (currently in the process of selling off my Nikon gear), although a D300. When I purchased my Nikon lenses, 24-70 70-200 etc., I had full intention of going FX however life throws curve balls. I had a pretty severe shoulder injury and carrying a full Nikon kit was just too much. The OM-D has really been a revelation; carrying around a m43 kit is nothing and the image quality is far better than my skill as a photographer.

Certainly not looking back now however I'm also not doing any sports shooting anymore.